Regulations & Entry Forms for Isle of Man Steam Packet Company Southern 100 Road Races 2023 Available

Southern 100 Racing, promotors of the Isle of Man Steam Packet Company Southern 100 Road Races are pleased to advise that Regulations and Entry Forms for the 2023 Meeting, which will be held on Monday, Tuesday, Wednesday and Thursday 10th, 11th, 12th & 13th July are now available to download from the official website .

Competitors are advised that they should take particular notice of the regulations regarding clothing, helmets, boots, gloves which have been brought in line with the ACU Mountain Course requirements.

Sidecar specifications have also changed: Formula Two Sidecar Race. Category B1, B2. For Machines complying with ACU FII British Sidecar Standing Regulations including 675cc Triumphs & 900cc Parallel Twins. No 765cc Machines are allowed.

From the Home Page, go to Meetings – Southern 100 Races – Entries –

As last year, competitors are now able to enter online, which the club would encourage however Southern 100 Racing understand that there would be competitors who would still prefer to receive and complete hard copies of the Regulations and Entry Forms and are happy to accommodate them for this year.

Anyone wishing to receive hard copies, please email either the Race Secretary on or the Press Officer on with your name and address and the documents will be posted to you.

Entries for the Isle of Man Steam Packet Company Southern 100 Road Races close on Thursday     8th June 2023.

Southern 100 Racing look forward to welcoming old and new friends to the Colas Billown Course between 10th – 13th July.


(Photo courtesy of Mark Corlett)


Lorem ipsum dolor sit amet, qui aperiam vituperatoribus at. Aliquip percipit ei vix, ceteros mentitum reprehendunt eu est.


Monday-Friday: 9am to 5pm; Satuday: 10am to 2pm
7300-7398 Colonial Rd, Brooklyn 242 Wythe Ave #4, Brooklyn
+ (123) 124-567-8901 + (123) 124-567-8901
Join the Southern 100 Mailing List

Be the first to recieve the lastest Southern 100 & Pre-TT Classic news, travel details, competitions and more. 

Don't worry, we hate spam too so promise not to!